I just went through this trying to get PC Controller installed as well. So for the current version, you do install Simplicity Studio. Once in Simplicity Studio, log in with your SILabs account.
Click on Tools (edit - actually, you can just click Install next to Tools to skip the next step and go straight to the Technology Type screen)
Add/Remove (I feel like my first time loading this up had a different screen here)
Install by Technology Type
Choose Z-Wave and then hit Next
Your account should have Development access, so nothing to do on this page but hit Next
You should be good to uncheck everything except for PC Controller, then hit Next to install it
Once it’s done installing, to run it, on the main Simplicity Studio window, click Tools again, then select Z-Wave PC Controller, and then OK
A bit of a pain, but that should get you there